Drill-block



H. FALTERMAYER.

DRILLBLOCK. APPLICATION FILED FEB. 13, 1920.

Patented Nov. 8, 1921.

v TM Q 0H. i M 3 6 0 6 0 0 Q 0 O\mv@ O 0O 6 OQOnwQ 0 0.6 000 a N1 O\ N O\ GQGO GOOOOOOOOQQQOQQ e000 UNITED STATES PATENT OFFICE.

HARRY FALTERMAYER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO FRED E. RUSSELL, OF LANGHORNE, PENNSYLVANIA.

DRILL-BLOCK.

Specification of Letters Patent.

Patented Nov. 8, 1921.

Application filed February 13, 1920. Serial No. 358,523.

To all whom it may concern Be it known that I, HARRY FALTERMAYER. a, citizen of the United States, residing in Philadelphia, Pennsylvania, have invented the Drill-Block of which the following is a specification.

One object of my invention is to provide a simple and convenient holder for supporting a series of twist or other drills when these are not in use, which shall include a novel arrangement and construction of parts designed to facilitate the quick replacement of any drill in its proper recess or hole;

the invention more especially contemplating a novel form gage or diameter-measuring device so associated with a series of drillreceiving holes as to permit the user to readily and speedily caliper or gage the shank of a drill and thereafter place it in its proper hole or recess.

My invention further contemplates a novel form of gage or measuring device for determining the diameter of cylindrical bodies or bodies of circular section and that with a high degree of accuracy.

These objects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying drawings, in which,

Figure 1 is a plan of a drill block constructed in accordance with my invention.

Fig. 2 is a transverse vertical section on the line 2-2, Fig. 1;

Fig. 3 is a plan of the structure shown in Fig. 1 with the cover plate removed, and

Fig. 4 is a side elevation of the device shown in Fig. 1.

In the above drawings, 1 represents an elongated, substantially rectangular plate having supporting legs 2 adjacent its corners and formed with a relatively wide opening or slot extending longitudinally to within a short distance of its ends. This opening is spanned by bridges 3 which serve to support two gage bars 4 so that their top surfaces are substantially flush with the flat top of the main plate 1.

Said gage bars are made of hardened steel or equivalent material and their adjacent edges are straight and plane. They are immovably held to the bridge pieces 3 by screws 5 and dowel pins 6 so that said edges extend in lines at an acute angle to each other, defining a narrow elongated slot 8, and the distance between them increases from a predetermined minimum at one end. somewhat less than the diameter of the smallest object to be gaged, to a maximum at the opposite end, somewhat more than the diameter of the largest object to be measured.

The top of the plate has fixed to it a thin sheet 7 of brass constituting a cover plate, held in place by screws 9 and having immediately over the slot 8 an elongated and relatively wider slot so that both edges of said cover plate are a short distance back or clear of the edges of the bars. Along one edge of the slot in the cover plate is a suitable scale designed to give direct readings in inches or milimeters or in any fractions thereof, of the width of the adjacent portions of the slot 8 defined by the adjacent edges of the gage bars 4.

\Vhen it is desired to use my device as a receptacle and support for twist or other drills, I form in it one or more series of holes 10, there being in the case illustrated two such series arranged in staggered relation and of diameters increasing progressively from that end of the plate adjacent the narrowest part of the slot 8 to the opposite end thereof. These holes preferably extend through the cover plate 7 and into but not through the main or body plate 1 and each of them has a line 11 extended from it toward the slot 8 and suitably cut or engraved on the top surface of the cover plate 7. Each of these lines is perpendicular to the edge of the slot in the cover plate for a short distance away from said edge and such perpendicular portion of each line intersects the edge directly opposite that portion of the slot 8 whose width is equal to the diameter of the hole from which the line extends.

WVith this arrangement andconstruction of parts any cylindrical object, such as a roller, a rod, or a pin whose diameter it is desired to ascertain, is placed in the larger portion of the slot 8 and while held perpendicular to the top surface of the cover plate 7, is moved toward the narrower end of said slot. Obviously such a piece is finally brought to rest when it simultaneously engages the adjacent edges of the gage bars 4 and its diameter may be directly ascertained by noting the particular reading of the scale at that point Where it is so engaged.

When the device is used as a drill-supporting block, it is merely necessary to introduce a drill into the larger end of the slot 8 and after moving it toward the small endthereof, note the particular line 11 opposite which it comes to rest when simultaneously engaging both of the gage bars 4. It may then be removed from the slot 8 and by means of the guidance provided by the line 11 'directly placed in the hole 10 in which said line terminates; it being thus possible to save considerable time in returning drills to their proper positions in the block since it is possible to invariably place'a drill in thecorrect receiving hole instead of trying it in several holes until the one is found having the proper diameter. 7

I claim 1. The combination of a metallic supporting structure having two hardenedstraight edges defining a tapering slot; and a graduated plate overlying said structure provided with a graduated edgeextending adjacent one of said edges to indicate the width of said slot at any point thereof.

2. A measuring device consisting of a supporting structure having a slot therein; with two hardened metal gage bars mounted on the structure and having-relatively straight adjacent edges defining a tapering slot a'pproximately'parallel with the slot ofsaid structure.

3. The combination of a supporting structure; two metal gage bars mounted on said structure and having relatively straight adjacent hardened edges defining a tapering slot; with a plate graduated adjacent the edge of one of said bars'to indicate the width of the slot at any point thereof; a

4;. The combination of a structure having a slot defined by two converging straight edges and a series of holes of differing diameters formed in said structure; there being lines from one edge of the slots to said holes for indicating the portions of said slot having widths equal to the diameters of said holes respectively. 7

5. A structure having a slot and a series of holes of differing diameters; there being lines from one edge of the slot to said holes for indicating the portions of said slot having widths equal to the diameters of said holes respectively.

6. The combination of a structure having a series of holes of varying diameters and provided with a slot having straight converging walls; with lines extending from the holes to points adjacent said slot at which the latter has widths respectively equal to the diameters of the holes.

7. The combination of a supporting structure having a series of holes; and two straight edge gage bars mounted on said structure with their adjacent edges defining a slot having converging walls; there being lines extending from the holes to points adjacent the edges of said slot at which the latter has widths respectively the same as the diameters of said holes.

8. The combination ofaplate; two straight edge gage bars mounted thereon-in positions to define a slot having converging walls; and a cover mounted on said plate having an opening permitting access to the slot defined by the gage bars, there being holes extending through said cover and into the plate; there being lines from one edge of the slot to said holes for indicating those portions of the slot respectively having widths equal to the diameters of said holes.

9. The combination of a structure having an elongated slot and a metal gage device.

mounted on the structure to define a slot having converging hardened edges under and narrower than those of the slot in said structure.

HARRY FALTERMAYER. 

